The Origin of Species by Means of Natural Selection: Or the Preservation of Favored Races in the Struggle for Life |
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Page 32
... distinct breeds , that male and female pigeons can be easily mated for life ; and thus different breeds can be kept together in the same aviary . I have discussed the probable origin of domestic pigeons at some , yet quite insufficient ...
... distinct breeds , that male and female pigeons can be easily mated for life ; and thus different breeds can be kept together in the same aviary . I have discussed the probable origin of domestic pigeons at some , yet quite insufficient ...
Page 33
... distinct species . Ask , as I have asked , a celebrated raiser of Hereford cattle , whether his cattle might not have descended from Long - horns , or both from a common parent - stock , and he will laugh you to scorn . I have never met ...
... distinct species . Ask , as I have asked , a celebrated raiser of Hereford cattle , whether his cattle might not have descended from Long - horns , or both from a common parent - stock , and he will laugh you to scorn . I have never met ...
Page 41
... distinct strains . The two flocks of Leicester sheep kept by Mr. Buckley and Mr. Burgess , as Mr. Youatt remarks ... distinct to be ranked at their first appearance as distinct varieties , and whether or not two or more species or races ...
... distinct strains . The two flocks of Leicester sheep kept by Mr. Buckley and Mr. Burgess , as Mr. Youatt remarks ... distinct to be ranked at their first appearance as distinct varieties , and whether or not two or more species or races ...
Page 44
... distinct breeds , in which as many as seventeen tail - feathers have been counted . Perhaps the first pouter - pigeon did not inflate its crop much more than the turbit now does the upper part of its œsopha- gus , - ‚ —a habit which is ...
... distinct breeds , in which as many as seventeen tail - feathers have been counted . Perhaps the first pouter - pigeon did not inflate its crop much more than the turbit now does the upper part of its œsopha- gus , - ‚ —a habit which is ...
Page 45
... distinct at our poultry - shows . These views appear to explain what has sometimes been noticed - namely , that we know hardly anything about the origin or history of any of our domestic breeds . But , in fact , a breed , like a dialect ...
... distinct at our poultry - shows . These views appear to explain what has sometimes been noticed - namely , that we know hardly anything about the origin or history of any of our domestic breeds . But , in fact , a breed , like a dialect ...
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Common terms and phrases
adapted affinities allied species America ancient appear Asa Gray beak become bees believe belonging birds breeds cause cells characters climate closely allied colour common continent crossed crustaceans degree developed difficulty distinct species domestic doubt effects eggs embryo existing extinct extremely facts favourable fertilised fertility flowers formation forms fossil Fritz Müller genera genus geological geological period Glacial period gradations greater number groups of species habits Hence hybrids important individuals inhabitants inherited insects instance instincts intercrossing intermediate kind lamellæ larvæ less living males mammals manner marsupials migration modified descendants natural selection naturalists nearly nest occasionally offspring organisation organs parent peculiar perfect pigeon pistil pollen present principle probably produced progenitor quadrupeds ranked remarked resemblance rudimentary seeds sexual selection Silurian slight South America stamens sterility structure successive supposed swimbladder tend theory tion trees variability variations varieties vary whilst whole wings young